The subject of this article is a real-life person, company, product, or creative work that has been mentioned "in-universe" in a canon source. The Harry Potter Wiki is written from the perspective that all information presented in canon is true (e.g., Hogwarts really exists), and, as such, details contained in this article may differ from real world facts.

Contents

Moondew is a magical substance extracted from the moon, persumably used in potions. Its properties were discovered in medieval times by druidess Cliodna. Also, the phases of the Moon influence the making of potions, as studied by Hesper Starky. Veritaserum takes a full moon cycle to mature.

Diseases

It was believed by medieval Healers that taking the liver of a toad, binding it tight about the victim's throat and standing naked by the full moon in a barrel of eels' eyes would cure spattergroit. Wizards infected with lycantrophy transform into a Werewolf if exposed to the full moon's rays.